# eon vs eta

> English confusable word pair

## The two words

### eon
*noun · IPA /ˈi.ɑn/ · frequency rank #41,614*
Eternity, the duration of the universe.

### eta
*noun · IPA /ˈiːtə/ · frequency rank #17,836*
The seventh letter of the Modern Greek alphabet, the eighth in Old Greek.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/vs/eon-vs-eta